Signal valve



Patented Get. 30, 19.22%.

UNITED STATES PArENr caries.

MENTS, or ONE-HALF To PAUL C. swoL'a, or NEW HAVEN, CONNECTICUT.

SIGNAL VALVE.

Application ined october 31, '1921.v

To all whom t may concer-1t:

Be it known that I, FRANK N. Krissy, a citizen of the United States, residing at New Haven, in the county of N ew Haven and State of Connecticut, have invented` certain new and useful Improvements in Signal Valves, of which the specification,` reference being had therein to the accompanying drawings.

This invention relates to signal valves of the type designed to be attached to the valve stem of a motor vehicle or similar tire and toy operate and function when the air eX- ceeds a predetermined pressure. i

Among other aims and objects of the invention may be recited the provision of a device of the character mentioned with a view to compactness, and in which the number ofl parts are few, the construction simple, the cost of production small and efficiency and operation higl The improvements in the details and arrangement of partswill be apparent from an inspection of the accompanying `drawings, in connection with the description hereinafter contained, wherein a preferred embodiment of the invention is disclosed for the purpose of imparting an understand ing of the same.

In the drawings,

Figure 1 is an elevation of my improved device complete; and

Figure 2 is an enlarged longitudinal sectional elevation thereof.

Iaving more particular reference to the drawings, in connection with which like reference characters refer to corresponding parts in both figures, 10 designates the valve body having a projecting stem 11 upon one side thereof closed by a cap 12 threaded thereon and within which is mounted an air inlet valve 13 of the usual type for this class of devices.

Secured in the lower end of the valve body 10 is the plug 14 having a nut 15 roe tatable therein and which is threaded onto the valve stem 16 connected with the tire. Ports 17 near the outer end of the plug 14 connect with the port 18 therein.

-Within the valve body 10 are the chambers 19 and 2O that are separated by a shoulder 21 and opening into the chamber following is a I Serial N0. 511,821.

l 23 dethe head portion 2l a shoulder 25 within 10 and the body portion of which is of less diameter than the chamber 19 into which it projects. Hthin the bottom ofthe body portion is a disk 27 preferably of fiber, rubber or similarmaterial, and through the outer wall thereof are one or more ports 26.

Within the chamber A.2O isa valve carrier 2S having a valve 29 threaded in one end thereof with a port 33 therethrough, which latter is surrounded by a diaphragm 30 which contacts with the end of the vala@ carrier 28 upon one side and against tlm shoulder 21, the collar 31 and the head 21 upon the opposite side. The collar 31 when in its down position rests upon the shoulder 32 on the valve cup 23, at which timethe lower end of the valve V29, whi'chis preferably beveled at 39, is against the disk 27 The diaphragm 30 is held against the shoulder 21 by a collar34 which contacts therewith, and a nut 35 threaded within the body 10 substantially as shown infigure 2. This nut also provides a convenient support or guide for the valve carrier 28.

Threaded within the body 10 is 4a .spring cylinder 36 provided with an opening 37 through the head thereof, between whlch and a shoulder upon. the valve carrier 28 is a. spring 38.

Fixed to the head of the spring cylinder 36 is a sleeve 40 the inside diameter which is substantially the same as the outside diameter of the upper portion of the valve body 10, and the lower end 41 o f which when in register with the graduations 42 upon the exterior of the valve body 10 indicates the air pressure required tof lift the valve 29 ofi` its seat against the tension of the spring 38. This sleeve also projects above the end of the spring cylinder 36 andl terminates in a knurled head 43 so as to provide convenient means for manual rotation thereof, and fixed in the end thereof 1s a plate 44 having an opening 45 therethrough coincident with the opening 37 but of considerable smaller diameter. Closing the outer open end of the sleeve is an inverted cup 46 having an opening 47 through the 19 is a port 22 through the stem 11. signates a valve cup, of which rests upon the valve body 29 and the valve vcarrier Athe tension of the spring f openings 37 and 45 into head thereol: of substantially the same diameter as the opening 45.

The arrangement of the inverted cup 46 and the plate 44 lis such that ber 48 therebetween.

In Figure 2 the parts are shown with the valve 29 upon its seat, that is, the disk 27 which is its normal position until after the pressure Vexceeds the number of pounds indicated by the graduations 42 in line with the lower edge of the sleeve 40.

In operation, the valve is the valve stem 16 by threading the nut 15 thereon the Cap 12 is removed, the end of the-I a-ir inlet pipe or hose projected into the stem 11 as is usual. rlhe air now passes through the valve 13 and port 22, lls the chamber 19, passes through the ports 26 into the valve cup 23, and through the `ports 13 and 17 into the stem 16. When the pressure exceeds that indicated by the graduations 42, the valve 29 is lifted ofi its seat, by the air pressure within the valve cup 23, against. 38 and the air then escapes through the po-rt 33 in theV valve 28 into the chamber 2O of the body member,

the chamber 48, and

i out through the opening 4i.

The arrangement of the plate 44 and the4 45 and 47 is such that an audible whistling soundfis produced, thus announcing that the air pressure has exceeded that indicated by the graduations, when theadmission of air through the valve 13 is discontinued and the spring '38 returns the valve 29 onto its seat.

There are mino-r changes and alterations that maybe made within my invention, aside from those herein suggested, and l would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls Vthere is a cham- Y connected with j thence through the` fairly Within the spirit and scope ot' the ap-l pended claims. Y Y

What claim as new and desire to secure by Letters Patent, is:

1. ln a valve, a valve body, a cup, having one solid end and radial ports through a wall thereof, mounted in said valve body with its solid end in the direction of the intake ot the valve, a valve inovab-ly mounted within said valve body and having a seat within said-cup, a flexible diaphragm surrounding said valve; and spring means for holding said valve on its seat. i j

2. ln a valve-,a valve body, a. valve cup within said body having one losedvr end and one yor more radial po-rts through the lside thereof, a valve with a port there-A through, one end of which projects into and is of less diameter than that of the inside o said cup, a flexible diaphragm mounted within said valve body and eonnected with said valve, and spring means for holding said valve upon its seat within 3. ln a valve, a valve body having a chamber there-ima valve cupfwith one solid end within said valve bod",7 and projecting into said chamber having one or nio-re radial 'portsl through the wall thereof, the outside diameter of said valve cup beingless than that of said chamber, a flexible diaphragm, means for holding said diaphragm in said valve body so as to prevent movement of said valve cup, a valve with a port therethrough connected with said diaphragm and mounted so that a portion thereof projects into said cup, the diameter thereof being less than that of the inside of said cup, and spring means for holding said valve on its seat within said cup. l

ln testimony whereof, l have hereunto affixed my signature.

FRANK N. KELSEY 

